Patents Assigned to NanoLambda, Inc.
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Patent number: 9395473Abstract: A device such as a filter or reflector includes a conductive layer including a periodic pattern of elements. The elements have shapes and sizes configured such that a transmittance or reflectance spectrum of the conductive layer has a drop at a long-wavelength end. The elements have a period configured such that the spectrum has a dip at a Plasmon mode resonant wavelength. The spectrum further includes a peal—between the dip and the drop.Type: GrantFiled: March 19, 2010Date of Patent: July 19, 2016Assignee: NANOLAMBDA, INC.Inventors: Byung Il Choi, Byounghee Lee, Min Kyu Song
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Patent number: 9395244Abstract: Miniature spectrometers produce low resolution spectral data due to their size limitations. A method for processing these spectral data is proposed. The spectral data from a low resolution spectrometer is enhanced to a higher resolution, or processed to be in the wavelength domain. This process is called spectrum reconstruction, and can be used in low cost and miniature spectrometers with limited spectral resolution. The proposed method is noise robust, adapts to input spectrum, and can be used across many types of spectrometric devices without any manual adjustment of parameters.Type: GrantFiled: September 22, 2011Date of Patent: July 19, 2016Assignee: NANOLAMBDA, INC.Inventors: Umpei Kurokawa, Cheng-Chun Chang, Byung Ii Choi
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Publication number: 20140022544Abstract: Miniature spectrometers produce low resolution spectral data due to their size limitations. A method for processing these spectral data is proposed. The spectral data from a low resolution spectrometer is enhanced to a higher resolution, or processed to be in the wavelength domain. This process is called spectrum reconstruction, and can be used in low cost and miniature spectrometers with limited spectral resolution. The proposed method is noise robust, adapts to input spectrum, and can be used across many types of spectrometric devices without any manual adjustment of parameters.Type: ApplicationFiled: September 22, 2011Publication date: January 23, 2014Applicant: NanoLambda, Inc.Inventors: Umpei Kurokawa, Cheng Chun Chang, Byung Ii Choi
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Patent number: 8542359Abstract: A spectrum sensing method includes (a) receiving an incident radiation simultaneously through a filter array composed of multiple bandpass filters, (b) digitizing spectral responses of the filter array, and (c) generating an estimate of spectral profile of the incident radiation based on digitized spectral responses of the filter array.Type: GrantFiled: September 7, 2012Date of Patent: September 24, 2013Assignee: NanoLambda, Inc.Inventors: Byung Il Choi, Byounghee Lee
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Patent number: 8462420Abstract: A tunable plasmonic filter or an optical filtering method discloses plasmonic filter structure and a voltage or current source. An intensity or wavelength of light transmitted through the filter structure is modulated by the intensity of a voltage or current from the voltage or current source. The plasmonic filter structure is located between electrodes electrically connected to the voltage or current source. The plasmonic filter structure is configured such that the incident light is resonant with at least one plasmonic mode on the structure, and a predetermined wavelength will perturb the metallic plasmonic structure in surface plasmon on energy bands for the wavelength selective transmission of light.Type: GrantFiled: December 21, 2007Date of Patent: June 11, 2013Assignee: NanoLambda, Inc.Inventors: Byounghee Lee, Byung Il Choi
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Publication number: 20130044321Abstract: A spectrum sensing method includes (a) receiving an incident radiation simultaneously through a filter array composed of multiple bandpass filters, (b) digitizing spectral responses of the filter array, and (c) generating an estimate of spectral profile of the incident radiation based on digitized spectral responses of the filter array.Type: ApplicationFiled: September 7, 2012Publication date: February 21, 2013Applicant: NanoLambda, Inc.Inventors: Byung Il Choi, Byounghee Lee
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Patent number: 8330945Abstract: A visible wavelength range proximity sensor includes a visible light emitter with a peak wavelength in a visible wavelength range, and a plasmonic ambient light sensor, where a proximity sensing mode and an ambient light sensing mode are time multiplexed.Type: GrantFiled: March 19, 2009Date of Patent: December 11, 2012Assignee: NanoLambda, Inc.Inventors: Byung Choi, Min Kyu Song, Byounghee Lee
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Patent number: 8284401Abstract: A spectrum sensing method includes (a) receiving an incident radiation simultaneously through a filter array composed of multiple bandpass filters, (b) digitizing spectral responses of the filter array, and (c) generating an estimate of spectral profile of the incident radiation based on digitized spectral responses of the filter array.Type: GrantFiled: July 9, 2008Date of Patent: October 9, 2012Assignee: NanoLambda, Inc.Inventors: Byung Il Choi, Byounghee Lee
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Patent number: 8274739Abstract: A plasmonic Fabry-Perot filter includes a first partial mirror and a second partial mirror separated from the first partial mirror by a gap. At least one of the first partial mirror or the second partial mirror includes an integrated plasmonic optical filter array.Type: GrantFiled: December 21, 2007Date of Patent: September 25, 2012Assignee: NanoLambda, Inc.Inventors: Byounghee Lee, Byung Il Choi
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Publication number: 20120129269Abstract: A device such as a filter or reflector includes a conductive layer including a periodic pattern of elements. The elements have shapes and sizes configured such that a transmittance or reflectance spectrum of the conductive layer has a drop at a long-wavelength end. The elements have a period configured such that the spectrum has a dip at a Plasmon mode resonant wavelength. The spectrum further includes a peal- between the dip and the drop.Type: ApplicationFiled: March 19, 2010Publication date: May 24, 2012Applicant: NanoLambda, Inc.Inventors: Byung Il Choi, Byounghee Lee, Min Kyu Song
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Publication number: 20110086676Abstract: A visible wavelength range proximity sensor includes a visible light emitter with a peak wavelength in a visible wavelength range, and a plasmonic ambient light sensor, where a proximity sensing mode and an ambient light sensing mode are time multiplexed.Type: ApplicationFiled: March 19, 2009Publication date: April 14, 2011Applicant: NanoLambda, Inc.Inventors: Byung Choi, Min Kyu Song, Byounghee Lee